You can play stuff you physically own from a Roku too. Are you saying that Sonos could arbitrarily upload your media files to their servers? Doubtful. At worst, they could do a sound-print analysis locally on the device to identify it and send the metadata to Sonos.
I am trying to think of concrete examples of scenarios where actual harm would REALISTICALLY be done to individual consumers because of Sonos privacy policy.
If an out-of-control oppressive government is the real concern here, is a flimsy EULA _really_ going to provide any protection whatsoever? Can you really even have 100% trust that the EULA will be obeyed by the company if they can get away with violating it?
I am trying to think of concrete examples of scenarios where actual harm would REALISTICALLY be done to individual consumers because of Sonos privacy policy.